<template>
  <div class="container">
    <div class="app-container">
      <!-- MARK 一级权限的添加按钮 -->
      <el-button
        class="btn-add"
        size="mini"
        type="primary"
        @click="addPermission(0, 1)"
        >添加访问</el-button
      >
      <el-table
        default-expand-all
        :data="list"
        row-key="id"
        border
        style="max-height: 450px; overflow-y: scroll"
      >
        <el-table-column prop="name" label="名称" />
        <el-table-column prop="code" label="标识" />
        <el-table-column prop="description" label="描述" />
        <el-table-column label="操作">
          <template v-slot="{ row }">
            <!-- MARK 🐎二级权限的添加按钮-->
            <el-button
              v-if="row.pid == 0"
              size="mini"
              type="text"
              @click="addPermission(row.id, 2)"
              >添加功能</el-button
            >
            <!-- MARK 触发编辑弹层 -->
            <el-button size="mini" type="text" @click="editPermission(row.id)"
              >编辑</el-button
            >
            <el-button size="mini" type="text" @click="delPermission(row.id)"
              >删除</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </div>
    <!-- 放置一个弹层 用来编辑新增节点 -->
    <el-dialog
      :title="`${showText}权限点`"
      :visible="showDialog"
      @close="btnCancel"
    >
      <!-- 表单 -->
      <el-form
        ref="perForm"
        :model="formData"
        :rules="rules"
        label-width="120px"
      >
        <el-form-item label="权限名称" prop="name">
          <el-input v-model="formData.name" style="width: 90%" />
        </el-form-item>
        <el-form-item label="权限标识" prop="code">
          <el-input v-model="formData.code" style="width: 90%" />
        </el-form-item>
        <el-form-item label="权限描述">
          <el-input v-model="formData.description" style="width: 90%" />
        </el-form-item>
        <el-form-item label="开启">
          <el-switch
            v-model="formData.enVisible"
            active-value="1"
            inactive-value="0"
          />
        </el-form-item>
      </el-form>
      <el-row slot="footer" type="flex" justify="center">
        <el-col :span="6">
          <el-button size="small" type="primary" @click="btnOK">确定</el-button>
          <el-button size="small" @click="btnCancel">取消</el-button>
        </el-col>
      </el-row>
    </el-dialog>
  </div>
</template>
<script>
import { getPermissionList, getPermissionDetail, updatePermission, addPermission, delPermission } from '@/api/permission'
import { transListToTreeData } from '@/utils'
export default {
  /**
   * 权限是通过角色这个中间人实现，
   * 首先员工拥有角色，
   * 角色拥有权限，
   * 那么员工自动拥有了角色所对应的权限。
   */
  name: 'Permission',
  data () {
    return {
      list: [],//存储列表
      formData: {
        name: '', // 名称
        code: '', // 标识
        description: '', // 描述
        type: '', // 类型 该类型 不需要显示 因为点击添加的时候已经知道类型了
        pid: '', // 因为做的是树 需要知道添加到哪个节点下了
        enVisible: "0" // 默认关闭
      },
      rules: {
        name: [{ required: true, message: '权限名称不能为空', trigger: 'blur' }],
        code: [{ required: true, message: '权限标识不能为空', trigger: 'blur' }]
      },
      showDialog: false
    }
  },
  created () {
    this.getPermissionList()
  },
  computed: {
    showText () {
      // 表单有权限id就是编辑
      return this.formData.id ? '编辑' : '新增'
    }
  },
  methods: {
    async getPermissionList () {
      this.list = transListToTreeData(await getPermissionList(), 0)
    },
    // 显示添加表单
    addPermission (pid, type) {
      this.formData.pid = pid
      this.formData.type = type
      this.showDialog = true
    },
    // 显示编辑表单
    async editPermission (id) {
      // 根据获取id获取详情
      this.formData = await getPermissionDetail(id)
      this.showDialog = true
    },
    // 删除操作
    async delPermission (id) {
      try {
        await this.$confirm('确定要删除该数据吗')
        await delPermission(id)
        this.getPermissionList()
        this.$message.success('删除成功')
      } catch (error) {
        console.log(error)
      }
    },
    // 添加权限表单 确认
    btnOK () {
      this.$refs.perForm.validate().then(() => {
        if (this.formData.id) {
          return updatePermission(this.formData)
        }
        return addPermission(this.formData)
      }).then(() => {
        //  提示消息
        this.$message.success('新增成功')
        this.getPermissionList()
        this.showDialog = false
      })
    },
    // 添加权限表单 取消
    btnCancel () {
      // 清理响应式脏数据
      this.formData = {
        name: '',
        code: '',
        description: '',
        type: '',
        pid: '',
        enVisible: "0"// 默认关闭
      }
      // 清理固定脏数据
      this.$refs.perForm.resetFields()
      // 关闭dialog弹层
      this.showDialog = false
    },
  }
}
</script>
<style>
.btn-add {
  margin: 10px;
}
</style>
